The birth control pill is a mixture of ________ that prevent the maturation of the oocyte
a. progesterone and estrogen
b. estrogen and luteinizing hormone
c. estrogen and follicular stimulating hormone
d. progesterone and testosterone
e. testosterone and growth hormone
a
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Which of the following is mismatched?
a. sponges; gemmules b. cnidarians; polyp c. nematodes; segmentation d. flatworms; flame cell e. tapeworms; scolex
Which of the following species of Plasmodium causes cerebral malaria?
A) only P. falciparum B) P. ovale and P. malariae C) P. ovale and P. vivax D) P. vivax and P. malariae E) P. vivax, P. malariae, and P. vivax
In the reproductive cycle of a fern, a zygote develops into
a. sperm and egg. b. spores. c. a young gametophyte. d. a young sporophyte.
Respond to statements 151–155 in reference to the five animal
phyla listed below. a. Annelida b. Arthropoda c. Mollusca d. Echinodermata e. Rotifera D 151. Trilobites were members of this phylum. M 152. The larval stage in this phylum has bilateral symmetry, whereas the adult stage exhibits radial symmetry. M 153. Although most members are enclosed by hardened shells, this phylum name literally means “soft body.” E 154. This phylum has the greatest number of species. D 155. “Wheel animals” are in this phylum.